I an currently binging on
sabaceanbabe's amazing Treading Water fic. It's in the Hunger Games universe, set during the Quarter Quell and is Finnick/Annie. And is also making me totally obsessed. I am way behind and the fic is massive (300+ pages when I put it in word)so hours of bliss are ahead.
I cannot rec it highly enough! You can find it at her LJ or at the Archive Of Our Own.